[Libguestfs] [PATCH miniexpect 2/2] Add debugging capability at runtime.
Pino Toscano
ptoscano at redhat.com
Thu Oct 12 14:12:23 UTC 2017
On Wednesday, 11 October 2017 17:23:45 CEST Richard W.M. Jones wrote:
> +static int
> +mexp_vprintf (mexp_h *h, int password, const char *fs, va_list args)
> {
> - va_list args;
> char *msg;
> int len;
> size_t n;
> ssize_t r;
> char *p;
>
> - va_start (args, fs);
> len = vasprintf (&msg, fs, args);
> - va_end (args);
Due to the nature of va_list (whose implementation greatly differs per
architecture -- from a pointer, to a list of pointers, to structs, etc),
I think that here you need to copy the va_list using va_copy(), and
pass the copy to vasprintf.
I cannot find a better reference, but
https://stackoverflow.com/questions/3369588/pass-va-list-or-pointer-to-va-list
has a piece of advice on that.
--
Pino Toscano
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: This is a digitally signed message part.
URL: <http://listman.redhat.com/archives/libguestfs/attachments/20171012/64186269/attachment.sig>
More information about the Libguestfs
mailing list